Receiving system for electrical oscillations.



E. a Tf". Y. D. WQUB. REUEIV G SYSTEM FR ELETRIGAL SGJLTOES. APPLICATIONFILED APR. z?, m08.

i ERICH QUCK Ann FRITZ V. n. Wonne, oF WILLIAM PIXLEY AND HERBER 'narranseiiales @aanstaat citaten.

'I' ALLEN, OF LONDON,

ENGLAND.

'RECEIVING SYSTEM FOR EIECTRAL OSCILLTIONS.

aaai se.

fo all who/'nI it may concern.'

Specification of Letters Patent. `App1icate'rifilei .Pipi-i1 27', 1908.

iatented (liet. 5, i909. serial' no. 429,45"

Be it ltnown that we. linien Qirficii and Fiii'iz VAN DER lilo'uniz,both subjects of the Emperor of Germany, residing at 13 Mathieustrasse,Berlin,

in the Empire of Germany,

have invented certain new and ueful Iniprovenients Relating' toReceiving Systems lowing is a speciiication.

This invention relates to receiv termittentl brou'fht in connecreceiving circuit by means of terrupting arrangement.

iiccording to this invention the tor llectrical (,lscillations, of whichthe foling systems has'particular reference to receiving systems forcontinuous set fort-h in the prior No. 14792 of detector is in tion withthe a suitable indetector is permanently included within the oscillatingcircuit, and a condenser inserted in parallel' to-tlic detector isbrought intermittently in connection with the oscillating circuit by aninterrupting device contacts.

of suitably arranged In order that the invention may be clearlyunderstood and readily carriednito eli'ect., it wil-l now be describedmore tully with i'e'teience to the which accompanying drawings, in

Figure 1 represents diagrainmatically one inethod of carrying theinvention-into pi'acshow modified illustrated in tice, and Figs. 2, 3, tand i arrangements of the method Fig. l.

ln' Fie. l t-lie receivinc' antenna systei'n comprises l the receiving`antenna, 2 an inductance, 3

a variable condenser, and t the earth connection or counter capacity.

l'l'ith this antenna system is coupled an oscillatory circuit consistingot an inductance'5, a dcl i l I l i l l tector G, a variable condenser Tand a suitable interrul'iter S called a ticlteiz7 aforesaid oscillatorycircuit is timed to the antenna the detector will be caused to respondas follows r-lt' the ticker is in its circuit coii'ipleting slightlydamped circuit 5,

`When the position, the energy in the T. 8 will oscillate until it hasreached its maximum amplitude. If now the ticker cuts out thecoi'idcnscr that 6. the detector is in parallel with the detectorcircuit 5, t3. will become out with the antenna so that the from onecircuit to the other of resonance thin of energy cease and 'ing' ofthesecondary y the voltage in the detector circuit 5, t3. will rise becauseot' the diminution ot' the capacity. This increase of voltage will thencause the detector to respond.

ln Fig. 2 another arrangement is shown in which further means are usedto increase the voltage in the detector circuit. l i'epresentsl theantenna system with which is inductirely coupled a secondary circuitcoinposed of an inductance 2 and a variable c'oi'idenscr 3. secondarycircuit through the common inductance at 4 is the oscillatory circuitcoinposed of inductances 4' and 5, condeiisei' 9, variable condenser'i'. ticker t, and detector (S. Circuit l is in resonance with circuitQ', 3, and circuit 2. 23 is in resonance with the oscillatory circuit t.9, 5, S, T. lVhen the ticker is closed the capacity of the detector (Sand that of the condenser T are in parallel to each other. Thecapacities 7 and (i together are small compared with capacity t). Whenthe ticker is open the energy flowing from the receiving' antenna intothe slightly' damped secondary circuit 2', 3 may reach a maxiii'iuniamplitude since the detector circuit T", t), 5. t3, is out of resonancewith the secondary circuit 2. 2l and does not roh it ol' energy. thenthe ticker is closed7 the detector circuit is then iii resonance withthe secondary circuit 2, il. so that energy thciitlow's into thedetector circuit and distributes there in the capacity present.Consequently the position and the magnitude of this capacity are ofgreat importance. The capacity t) must be large compared with 7 and oand 7 niust be'larger than (i. The capacity t) must be arrangedsymmetrically to the inductance present, so that the detector will besituated within a maxim "n of potential. By so doing the sensibility ofthe system will be increased since it'is nccessar to incr ase thepotential somewhat, in order to cause the detector to respond. W lienthe ticker is open this increase of the potential will be performed bydiminishing the capacity as mentioned above.

Fig. 3 shows the saine connections Fig. 2 with the exception that thesecondary circuit xis inductively tector circuit.

Fig'. 4 illustrates an ar -angeinent disposcircuit by inserting a tunedoscillatory circuit in the antenna. The

coupled with the de-.

detector circuit ie inductively coupled with llnf antenna circuit.

Fig. 5 represents similar connections to those shown in Fig. i vwiththel exception that the detector circuit is' directly connected with thetuned oscillatory antenna circuit. by the mutual inductance et.

lVhal we claim and dessire to secure by Letters YPatent of the UnitedStates is l. ln a device oit the character described, a receivingantenna, a trnied secondary circuit inserted in said antenna, a tunedoscillatory circuit inductively coupled thereto, a detector permanentlyincluded therein, a capacity, and means for'conneeting said-capacitigwith said oscillatory circuit and disconnecting it therefromintermittently.

2. In a device of the character described, a receiving antenna system, atuned secondary circuit, an inductance inserted into said secondarycircuit, a tuned loscillatory circuit, a detector'permanently includedin said osci'llatory circuit, a capacity,- and means for anddisconnecting said variable capacity to said tuned oscillatory circuitwhereby the l Hux of energy into said capacity is interrupted forthrough the detector, causing the -detector to respond. l

l'n testimony whereof We aiix our Signatures in presence of twoWitnesses. I

ERICH QUCK. y l FRITZ V. D. VOUDE. 'itnesses VVoLnnMAR HAUPT,

Hanny HAsrnR.

short circuiting the energy

